package com.itheima.controller;

import com.itheima.domain.Book;
import com.itheima.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

// 3.1 设置当前控制器为REST风格的控制器类，开发对应的CRUD功能，并调用对应的业务层接口

@RestController
@RequestMapping("/books")
public class BookController {

    @Autowired
    private BookService bookService;

    //json参数
    @PostMapping
    public Result save(@RequestBody Book book){
        boolean flag = bookService.save(book);
        return new Result(flag ? Code.SAVE_OK:Code.SAVE_err,flag);
    }

    //路径参数
    @DeleteMapping("/{id}")
    public Result deleteById(@PathVariable Integer id){
        boolean flag = bookService.delete(id);
        return new Result(flag ? Code.DELETE_OK: Code.DELETE_err,flag);
    }

    //json参数
    @PutMapping
    public Result update(@RequestBody Book book){
        boolean flag = bookService.update(book);
        return new Result(flag? Code.UPDATE_OK: Code.UPDATE_err,flag);
    }

    //路径参数
    @GetMapping("/{id}")
    public Result getById(@PathVariable Integer id){
        Book book= bookService.getById(id);
        Integer code= book!=null? Code.GET_OK: Code.GET_err;
        String msg= book!=null? "": "数据查询失败,请稍后再试";

        return new Result(code,book,msg);
    }

    @GetMapping
    public Result getAll(){
        List<Book> bookList = bookService.getAll();
        Integer code= bookList!=null? Code.GET_OK: Code.GET_err;
        String msg= bookList!=null? "": "数据查询失败,请稍后再试";
        //int i=1/0;
        return new Result(code,bookList,msg);
    }

}














